Improvement in rubbers and brushes



UNITED STATES PATENT OFFICE.

IMPROVEMENT IN RUBBERS AND BRUSHES.

Specification forming part of Letters Patent N0. 113,258, dated April 4,1871.

To all whom t may concern.'

Be 'it known that 1, AUGUSTUS CHARLES, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented certain Improvementsin Rubbers and l.Brushes for Cleaning Blackboards and for otherpurposes; and I do hereby declare the following to be a full, clear, andexact description of the same,l

reference being had to the accompanying drawing, Vforming part of thisspecification, in which- Figure l is a perspective view. Fig. 2 is anend View of modified form. Fig. 3 is a vertical longitudinal section.

This invention has relation to certain improvements in rubbers orbrushes for cleaning blackboards, window-glass, mirrors, hats, clothes,and the like.

It consists in forming the rubbing or brushing part of a several-sidedblock, covered on all sides with sheep-skin, chamois, felt, plush, orother material which will answer the required purpose, and soattachingit to a han. die that when the brushing or rubbing surface ofone side is Worn out or otherwise rendered useless, another side may besubstituted equal to the first, and so on.

In the accompanying drawing, A represen ts a handle, in which is cut alongitudinal chamber or groove, B,to receive and hold the block C, towhich it must correspond in shape, as

shown in Figs. l and 3. This block may be either triangular orquadrangular shaped, and is covered with sheep-skin, felt, chamois, orany other suitable material, by being glued thereto.

D represents a hole bored lengthwise through the center of said block,and D an elastic strap, which is made to pass through it, and-isattached at either end to the ends of the handle A. This strap holds theblock and handle together, and allows the position of the former to bechanged when necessary.

I do not restrictmyself to this or any other particular method ofsecuring the Iblock in place and allowing it to be turned.

This instrument is simple and economical, and will last much longer thanthe ordinary rubbers used for the same purpose.

Having fully described my invention, I claim- In combination, thegrooved handle A, `adjustable rubber or brush C, and the elastic strap.D, substantially as and for the purpose described.

In testimony that I clailn the above l have hereunto subscribed my namein the presence of two witnesses.

A. CHARLES. Vitnesses:

G. PRAETscH, J. G. BACKOFEN.

